Isolation enhancement of a capacitively-fed MIMO antenna using a quasi-fractal parasitic element and defected ground structure

Syed Naheel Raza Rizvi; Md Abu Sufian; Niamat Hussain; Yangbae Chun; Seong-Gyoon Park; Sunggoo Kim; Nam Kim

Heliyon (Oct 2024)

Isolation enhancement of a capacitively-fed MIMO antenna using a quasi-fractal parasitic element and defected ground structure

Syed Naheel Raza Rizvi,
Md Abu Sufian,
Niamat Hussain,
Yangbae Chun,
Seong-Gyoon Park,
Sunggoo Kim,
Nam Kim

Affiliations

Syed Naheel Raza Rizvi: Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, South Korea
Md Abu Sufian: Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, South Korea
Niamat Hussain: Department of Intelligent Mechatronics Engineering, Sejong University, Seoul, 05006, South Korea
Yangbae Chun: Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, South Korea
Seong-Gyoon Park: Department of Information and Communication Engineering, Kongju National University, Gongju, 314701, South Korea
Sunggoo Kim: Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, South Korea
Nam Kim: Department of Information and Communication Engineering, Chungbuk National University, Cheongju, 28644, South Korea; Corresponding author.

Journal volume & issue: Vol. 10, no. 20
p. e39228

Abstract

Read online

Vehicular Internet of Things (IoT) is facilitated by efficient RF front ends with suppressed mutual coupling for enhanced spatial diversity and increased channel capacity. This paper presents a mutual coupling suppressed MIMO antenna with a hybrid decoupling technique for Vehicle-to-Everything (V2X) communications, enabling IoT in automotive systems. The single elements consist of a radiating patch with a cleaving circular slot to introduce a capacitive effect on the radiating structure. Afterwards, the single-unit design is further extrapolated to a 2 × 2 MIMO antenna. The mutual coupling is suppressed between antenna elements by introducing a quasi-fractal parasitic element and a defected ground structure (DGS). The MIMO antenna is designed to conform to the requirements posed by V2X systems in Dedicated Short-Range Communications (DSRC) and Intelligent transportation system (ITS) scenarios. The proposed MIMO antenna offers measured |S11| 28 dB) between its individual elements, a diversity gain (DG) close to the ideal value of 10 dB (9.99 dB), peak realized gain of 6.5 dBi, an ECC below 0.001, and a beam coverage area of 180° in azimuthal and elevation plane by dynamic port switching. Thus, the proposed MIMO antenna module is a considerable candidate for future V2X communication paradigms.

Published in Heliyon

ISSN: 2405-8440 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Science: Science (General); Social Sciences: Social sciences (General)
Website: https://www.cell.com/heliyon/home

About the journal

Abstract

Keywords